-- I spent three hours buying a train ticket at the railway station the other day .
-- Why ? You __________ one on the Internet or by phone .
| A．could have bought | B．must have bought |
| C．would buy | D．should buy |
The criminals ______ in a hotel the other day were connected with a murder(谋杀).
| A．arrested | B．to be arrested |
| C．being arrested | D．arresting |
With a lot of things ， John will have a difficult time.
| A．to deal with | B．deal with |
| C．dealing with | D．dealt with |
A big earthquake hit Ludian in Yunnan, ________ many deaths and injuries and a big loss of property.
| A．to cause | B．caused |
| C．causing | D．having caused |
______ along with host families, I believe, language travel students are likely to get enough language practice.
| A．Stay | B．Having stayed |
| C．Staying | D．To stay |
Today we have chat rooms, text messages and email, but we seem _______ the art of communicating face-to-face.
| A．losing | B．to be losing |
| C．to be lost | D．having lost |